While I can agree with the author's point I think it was poorly expressed (your summary is better) and the way he suggests embodying the point seems contradictory to making an effort against Death. Though I think if people did have a certain expectation to live billions of years we wouldn't have very many hurried people around, though that's just my own speculation.

> Not to mention the disappointment you might feel if you die before the onset of the much hyped biotech revolution, having placed your hopes for happiness in its arrival.

At least the disappointment would be brief since by the time you're close enough to death to feel it you won't be alive much longer. Though I would find it pitiable that a person refuses to be happy their entire life and would only be happy being essentially immortal; it seems like many 'immortalists' are actually quite content in their current lives but want that to go on as long as possible.